Mechanism for forming thread-guiding slots in weaving-shuttles.



U. B. WEBSTER.

MECHANISM FOR FORMING THREAD GUIDING SLOTS IN WEAVING SHUTTLES.

APPLICATION FILED 0OT.12, 1911.

1,072,196, Patented Sept. 2, 1913.

4 SHEETSSHEET 1 COLUMBIA I'LANOORAPH 120-. WASHINGTON. n. c.

G. B. WEBSTER.

MECHANISM FOR FORMING THREAD GUIDING SLOTS IN WEAVING SHUTTLES.

APPLICATION FILED OOT.12, 1911.

Patented Sept. 2, 1913.

4 SHBBTB-SHEET 2.

G. B. WEBSTER.

MECHANISM FOR FORMING THREAD GUIDING SLOTS IN WEAVING SHUTTLES.

APPLICATION TILED OCT. 12, 1911.

LQ721 Patented Sept. 2, 1913.

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C. B. WEBSTER.

MECHANISM FOR FORMING THREAD GUIDING SLOTS IN WEAVING SHUTTLES.

APPLICATION FILED OUT. 12, 1911. 1,9723 9 Patented Sept. 2, 1913.

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CHARLES B. WEBSTER, OF FALL RIVER, MASSACHUSETTS, ASSIGNOR 0F ONE-HALF T0 JAMES K. LANNING, OF FALL RIVER, MASSACHUSETTS.

MECHANISM FOR FORMING THREAD-GUIDING SLOTS IN WEAVING-SHUTTLES.

To all 1071077), it may concern:

Be it known that I, Crnnmns l3. \Vnnsrnn, a citizen of the United States, and a resident of Fall River, in the county of Bristol and State of Massacl'iusetts, have invented an Improvement in Mechanism for I orming Thread-Guiding Slots in VVeaving-Shuttles, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the draw ings representii'ig like parts.

This invention relates to mechanism for forming thread guiding slots in weaving shuttles.

In order that the principle of the inven tion may be readily understood, I have disclosed one embodiment thereof in the accompanying drawing, wherein l igure 1 is a plan view of mechanism embodying my invention equipped for cutting a thread guiding slot in the side wall of a weaving shuttle; Fig. 2 is a side elevation of the upper portion of the structure shown in Fig. 1, viewing the same from the left in said figure; Fig. 3 is a side elevation of the structure shown in Fig. 1, viewing the same from the right in Fig. 1; Fig. 4: is a view similar to Fig. 1, but representing the machine when equipped to cut the thread guid' ing groove in the top wall of the shuttle; Fig. 5 is a side elevation of the structure shown in I 4t, viewing the same from the right thereof; Fig. 3 is a front elevation of the mechanism represented in Fig. 1; Fig. 6 is a top plan view of the forward end of a shuttle and showing the cut made therein by one of the cutters; Fig. 7 is a side view of the same end of the shuttle showing the cut therein made by the other cutter; and Fig. 8 is a transverse section through the shuttle showing the completed thread guiding slot or groove.

Loom shuttles are customarily provided with an eye at the forward end through which the thread issues. In the more modern type of shuttle, this eye is provided with a longitudinal slit to permit the shuttle to be hand threaded. The said slit of the eye communicates with a slot or groove cut into the wall of the shuttle, so that the thread may be passed by hand into said slot or groove and then be drawn or deflected through the slit of the eye into the eye as required for the weaving operation. Heretofore it has been customary to cut or other- Specification of Letters Iatent.

Application filed October 12, 1911.

atented Sept. 2, 1913.

Serial No. 654,378.

wise form a slot in the wall of the shuttle, but ditlieulty has been experienced in so shaping said slot as to prevent the thread escaping from the eye and thence through said slot or groove during the weaving operation. In order to overcome this detect, the said slot: in the wall of the shuttle has been variously shaped to prevent the escape of the thread, but so far as I am aware effective thread retaining slots have been manually cutin the shuttle wall. I have devised mechanism for mechanically cutting the thread guiding slot or slots in the shuttle wall, and thereby am enabled to prepare the shuttle inexpensively and expeditionsly.

Referring more particularly to the drawing, I have, in Figs. 1 to 5 thereof shown one form of mechanism for cutting the said thread guiding slot in the eye end of the shuttle. In order to ell'ect this operation, I preferably employ two different cutters, one of which is of flat form with a cutting, preferably serrated, segmental shaped edge, and the other of which is a partially cylindrical cutter having a cutting, preferably serrated edge. These cutters are adapted to be interclningeably received upon a suitable movable and preferably oscillatory shaft, whereby the shuttle when properly positioned with respect thereto may have the thread guiding slot or groove cut therein by the said two cutters, either of which may first be employed to cut its part of the slot or groove, the other cutter being thereafter employed to cut the remaining portion of the slot at a suitable and preferably at substantially a right angle thereto.

In Figs. 1. and 2, I have represented a frame or standard wherein is suitably mounted a drive shaft 2 having thereon fast and loose pulleys 3, 4 and a crank 5 or other suitable means for imparting to and fro moven'lent to the cutters. llerein I have represented a crank arm 6 eccentri-- cally connected as indicated at 7 to a disk 8 upon an oscillatory shaft 9 mounted in suitable bearings 10, 10 upon the frame of the machine. Removably mounted in any suitable manner upon the oscillatory shaft 9 is a preferably toothed cutter 11 segmental in shape as indicated in I 2, so that the teeth 12 thereof may penetrate the shuttle wall and preferably the side thereof, as indicated in Figs 1 and 2.

As shown most clearly in Figs. 6, 7 and 8, the slot or groove cut in the shuttle wall and leading from the slitted eye to the shuttle throat is composed of two portions, one of which is in a preferably horizontal plane parallel with or in the plane of the shuttle eye, and the other of which is preferably arcuate, and is cut in the top wall of the shuttle, so as to intersect the first portion of the groove. Viewing said figures, the cop receiving portion of the shuttle is indicated at 13 in Fig. 6, and leading therefrom is the throat 1st, through which the thread passes toward the eye 15. The cut formed in the shuttle by the cutter 11 is indicated at 16 in Fig. 7 as extending in a plane parallel with the shuttle eye 15 and to the desired extent toward the tip 17 of the shuttle. It

is evident that when the shuttle is presented to the cutter 11 and the latter is oscillated in the. manner described, the slot 16 is gradually formed in the shuttle wall. Preferably the said slot 16 extends rearwardly to the shuttle eye 15 and forwardly to an extent determined by the dimensions of the cutter 11. The inner boundary of said slot is, of course, curved in conformity with the contour of the toothed or cutting portion of the cutter 11.

In order to position the shuttle for the cutting operation and also to feed the shuttle toward the cutter as the work progresses, I provide suitable means preferably hand operated. in Fig. 1, T have represented a clamp block 18 having a shuttle clamping edge 19 adapted to be forced against the shuttle by set screws 20 tapped into a flange or plate 21 upon a head 22 mounted in undercuts or slideways 23 upon the machine frame. At the opposite face of the shuttle is a clamping piece 19 formed upon or carried by the head 22 and between which and the clamp 19 the shuttle is held when the screws are tightened. When the shuttle is held between the clamps 19, 19, it is necessary to position the same with respect to the cutter 11, so that the portion 16 of the thread guiding slot may be cut therein at the proper point between the top and bottom of the shuttle. In other words, the clamped shuttle is moved transversely or axially of the cutter 11, in any suitable manner. For this purpose, the head 22 received in the undercuts or slideways 23, is

fed therealong by suitable means, such, for example, as hand wheel 24 having a threaded stem 25 passing loosely through a portion 27 of the frame and tapped into a block or socket 26 on the head 22, as indicated in dotted lines in Fig. 1. Rotation of the hand wheel 2% serves to move the head 22 inward and suitably to position the shuttle beneath the cutter 11. After the shuttle 28 has been suitably positioned with respect to the cutter 11, 1 intermittently feed the shuttle toward the cut-ter 11 by suitable means, such, for example, as the hand wheel 29 shown most clearly in Fig. 3. The said hand wheel 29 is provided with a stem 29 passing through a stationary guide 29 upon.

the frame of the machine and having a threaded end engaging the block or socket 29 upon the head or slide29 having movement upon slideways or undercuts 29 shown in Fig. 1. Upon the head 29 are mounted the clamps v18, 19 and parts cooperating therewith, so that rotation of the hand wheel 29 feeds vertically the head 29 and the shuttle toward the teeth 12. The shuttle is moved by hand constantly toward the cutter 11 as described, as the latter is reciprocated until the portion 16 of the thread guiding slot is cut to the desired depth in the side wall of the shuttle. When this is effected the shuttle is withdrawn from engagement with the cutter 11 and the mechanism stopped for removal of the cutter 11 from the shaft 9 and the substitution of the cylinder or tubular cutter 36, shown most clearly in Figs. 1 and 5. Obviously, how ever, and as previously stated, either portion of the thread guiding slot may first be cut. Assuming, however, that the portion 16 is first cut, it becomes necessary to cut the portion 37 which preferably is arcuate and for the reason that the out desirably extends to that side of the throat 14: of the shuttle that is more remote from the exit end of the eye 15. This is desirable in order that the thread in the weaving operation may not find its way into the said slot 37, as might be the case were said portion 37 of the thread guiding slot to extend from the cen- The cutter 36 is tubular or partially tubular in shape, having a serrated or cutting edge 39. In order to cut the portion 37 of the thread guiding slot, the shuttle is removed from its support after the clamp 18 has been withdrawn from the shuttle and the shuttle is turned until the top thereof is presented to the tubular cutter 36. After the shuttle has been partially turned, as

indicated, the clamps 18, 19 are tightened and by turning the hand wheel 24: the shuttle is again fed toward the cutter, which in this instance is the tubular cut-ter 36. Oscillating movement being imparted to the shaft 9, the cutter 36 is oscillated'unt-il the portion 37 of the thread guiding slot is cut into the shuttle to asuflicient depth tointersect the straight portion 16 of said slot, as

indicated in Fig. 8. It will be observed that the hand Wheel 24 and co-acting parts are employed in the first instance laterally to position the shuttle with respect to the cutter,-that is, when using the fiat cutter 11, and in the second instance to feed the shuttle toward the tubular cutter 36.

In order to move or adjust the shuttle longitudinally or axially, so as to position it at the proper point with respect to each of the cutters in turn, I mount the shuttle clamps 18, 19, the head 22 and other co operating parts upon a head 40 (Fig. 5) itself mounted in slide ways or under-cuts 41 upon the frame of the machine and provided with a hand wheel 12 prefe ably constructed and mounted similarly to the hand wheels 24 and 29, whereby said head 40 and the shuttle may be adjusted so as to bring the shuttle in proper longitudinal position with respect to the cutters prior to the commencement of the cutting operation of each of said cutters in turn.

From the foregoing description, it will be evident that the mechanism here described may be readily employed by a substitution of cutters and the described positioning of the shuttle within the clamping members, and such is the preferred embodiment of my invention. For cheapness and simplicity of construction, however, I prefer to provide cutters interchangeably mounted upon a single shaft and to which the shuttle is pre sented in the manner described.

Having thus described one illust 'ative embodiment of my invention, I desire it to be understood that although specific terms are employed, they are used in a generic and descriptive sense and not for purposes of limitation, the scope of the invention being set forth in the following claims.

Claims:

1. Mechanism for forming thread guiding slots in weaving shuttles comprising in combination, means for cutting a substantially straight, short, thread slot in one face of a shuttle, terminating short of both ends of the shuttle, and means for cutting a short, arcuate slot in a face of the shuttle at substantially right angles to the other face, of sufficient length to intersect said straight slot.

2. Mechanism for forming thread guiding slots in weaving shuttles comprising in combination, means to cut in one face of the shuttle an areuate slot merging at one end into the cop receiving space of the shuttle and at its other end terminating in the stock of the shuttle, and means to cut a substantially straight slot in the adjoining face of the shuttle, said straight slot terminating at one end of the shuttle eye and at its opposite end intersecting the said arcuate slot.

3. Mechanism for forming thread guiding slots in weaving shuttles comprising in combination, oscillatory means to cut in one face of the shuttle an arcuate slot merging at one end into the cop receiving space of the shuttle and at its other end terminating in the stock of the shuttle, and cooperating reciprocating means to cut a substantially straight slot in the adjoining face of the shuttle, said straight slot terminating at one end at the shuttle eye and at its opposite end intersecting the said arcuate slot 3.

4t. Mechanism for forming thread guiding slots in weaving shuttles comprising in combination, an oscillatory shaft, interchangeable cutters mounted thereon, one being a segmental disk cutter and the other being a segmental band cutter, means for holding a shuttle in operative relation to said shaft and to the cutters when positioned thereon, means for moving the held shuttle axially of the shaft to present the shuttle to the action of the band cutter, and means for moving the shuttle toward the shaft in a plane substantially normal thereto, to present the shuttle to the action of the disk cutter.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

CHARLES B. WEBSTER.

Witnesses CHAS. S. RAINS, Jr., NICHOLAS I'IATHEWAY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

